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METALLURGY DIVISION ANNUAL PROGRESS REPORT FOR PERIOD ENDING MAY 31, 1961

Description: >Fundamental Alloying. Studies of crystal structures, reactions at metal surfaces, spectroscopy of molten salts, mechanical deformation, and alloy theory are reported. Long-Range Applied Metallurgy. A thermal comparator is described and the characteristic temperature of U0/sub 2/ determined. Sintering studies were carried out on ThO/sub 2/. The diffusion of fission products in fuel and of Al/sup 26/ and Mn/sup 54/ in Al and the reaction of Be with UC were studied. Transformation and oxidation d… more
Date: August 17, 1961
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Auger study of surface carbon and oxygen on thorium following ion bombardment

Description: The composition of a thorium metal surface has been monitored using Auger electron spectroscopy following Ar/sup +/ bombardment at different temperatures. After extended Ar/sup +/ bombardment, enough contaminated overlayers were removed to expose a surface region containing only thorium, bulk impurities, and imbedded argon. The main impurities, carbon and oxygen, differed in their behavior when the sample was annealed following bombardment. The amount of surface carbon either increased or remai… more
Date: November 17, 1977
Creator: Bastasz, R. & Colmenares, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Thermophysical properties of coal liquids. Seventh quarterly technical status report, April 1-June 30, 1981

Description: Measurements of rheological properties have been continued. Measurements at relatively low temperature (450 K) showed that a coarser coal grind shows substantially lower viscosity. It was also shown that coal and solvent obtained from the Fort Lewis plant give slurries of much higher viscosity than slurries from our reference coal and solvent. At higher temperatures (540 K) substantially the same relationships were shown. The effect of solvent-to-coal ratio was also found to be very great. Diff… more
Date: July 17, 1981
Creator: Droege, J. W.; Venkateswar, R. & Chauhan, S. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Elastic moduli, thermal expansion, and inferred permeability of Climax quartz monzonite and Sudbury gabbro to 500/sup 0/C and 55 MPa

Description: Young's modulus (E), bulk modulus (K), and the coefficient of thermal linear expansion (..cap alpha..) have been determined for Climax quartz monzonite to 500/sup 0/C and pressures (P) to 55 MPa and for Sudbury gabbro to 300/sup 0/C and 55 MPa. For each rock, both E and K decreased with T and increased with P in a nonlinear manner. In the monzonite, E and K decreased by up to 60% as P decreased from 55.2 to 6.9 MPa isothermally, while the gabbro indicated a decrease up to 70% over the same pres… more
Date: March 17, 1981
Creator: Page, L. & Heard, H.C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Analysis of measurements of the thermal conductivity of liquid urania

Description: An analysis was performed of the three existing measurements of the thermal conductivity and thermal diffusivity of molten uranium dioxide. A transient heat transfer code (THTB) was used for this analysis. A much smaller range of values for thermal conductivity than originally reported was found: the original values ranged from 2.4 to 11 W . m/sup -1/ . K/sup -1/, with a mean of 7.3 W . m/sup -1/ . K/sup -1/, whereas the recalculated values ranged from 4.5 to 6.75 W . m/sup -1/ . K/sup -1/, wit… more
Date: September 17, 1984
Creator: Fink, J.K. & Leibowitz, L.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Summary report of BCC ion correlation experiment. [800 to 1000/sup 0/C; voids; swelling; Ni/sup 2//sup+/, Mo/sup+/, Cu/sup 4//sup+/, and H/sup+/ ions]

Description: An interlaboratory program was established to compare the radiation damage produced in Mo at 800 to 1000/sup 0/C by different ions of different energies. The program included comparisons of microstructures produced by different ions, of measurements on a round robin TEM specimen, and of measurements on a common micrograph. Results are discussed. Ions used included Ni/sup 2 +/, Mo/sup +/, Cu/sup 4 +/, and H/sup +/.
Date: August 17, 1976
Creator: Brimhall, J L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Corrosion of High-Temperature Alloys in Sulfur-Bearing Cracked-Ammonia Atmospheres

Description: A representative selection of stainless alloys was exposed in sulfur- bearing cracked-ammonia atmospheres containing 43 vol. % water vapor. Experimentally controlled variables have included temperatures ranging from 1200 to 1800 deg F and S levels ranging from zero to 350 grains per 100 ft/sup 3/ of cracked ammonia. It has been found that high S levels do not result in any significant change in the corrosion behavior of materials evaluated. Increasing the temperature resulted in some modificati… more
Date: April 17, 1957
Creator: Ericson, G. L.; Braun, W. J.; Fink, F. W. & Peoples, R. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Determination of Suitable Insulation for a 1-5/16" Helium Filled Annulus in the Orr Helium in-Pile Loop, Design No. 4

Description: Heat loss tests were conducted with six insulation configurations for application in the riser regenerator and auxiliary regenerator sections of the loop. Insulation consisting of ten laminations of 0.003 in. stainless steel shim stock spaced 1/8 inch apart produced a temperature drop across the 15/16 inch annulus of 1200 F with a heat loss of 1.04 KW per foot of 2 inch schedule 40 pipe. The curve of heat loss vs. temperature difference is presented which, with results of similar tests with a 1… more
Date: August 17, 1959
Creator: Knight, R. B. & Helms, R. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CONCEPTUAL DESIGN OF THE PEBBLE BED REACTOR EXPERIMENT

Description: The Pebble-Bed Reactor Experiment (PBRE) was designed to advance the pebble-bed concept by providing a test of characteristic features and make contriliutions to the general development of all-ceramic gas-cooled reactors. The following objectives were established for the reactor experiment: to investigate key features of the pebble-bed concept, including on-stream fuel handling, movement of fuel through bed, and performance of core; to obtain operation and maintenance experience with a system c… more
Date: May 17, 1962
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High temperature thermodynamics and vaporization of stoichiometric titanium monoxide

Description: Three vaporization experiments were performed on samples of nearly stoichiometric titanium monoxide. Two experiments were constant temperature experiments (1806/sup 0/K) designed to measure the equilibrium vapor pressures of Ti(g) and TiO(g). In one experiment titanium monoxide was vaporized from a tungsten Knudsen effusion cell; the vapor was collected on a water cooled quartz cap surrounding the cell; and the total amount of titanium deposited on the cap was analyzed colorimetrically. In the … more
Date: August 17, 1976
Creator: Sheldon, R. I. & Gilles, P. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A MANOMETRIC METHOD FOR THE DETERMINATION OF OXYGEN IN ORGANIC COMPOUNDS

Description: A vacuum analytical method for the determination of oxygen in organic compounds was developed. Several milligrams (usually 3 to 5 mg) of the organic to be analyzed are sealed in an evacuated quartz bomb along with 2.5 to 3.5 mg of an organic reducing agent. Next the bomb is fired at 1050-- 1055 deg C for 30 minutes or longer. At the end of the heating period the bomb temperature is rapidly lowered from 1055 deg C to <650 deg C. As a last step the gaseous products are removed from the bomb and t… more
Date: December 17, 1963
Creator: Frazer, J W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High-temperature, radiation-tolerant electronics for the MMW (Multi-megawatt) Space Reactor Program

Description: One of the objectives of the Multi-Megawatt (MMW) space reactor program is to determine, within the next five years, what types of power electronic devices would be suitable for MMW space power applications. Suitable devices must be able to withstand high temperatures and high radiation fields. After investigating the literature on solid state device and miniature vacuum tube technologies, we have concluded that the miniature vacuum tube technology is, currently, the most promising. The main re… more
Date: October 17, 1986
Creator: Yee, J. H.; Orvis, William J.; McConaghy, C. & Ciarlo, D. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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